Observed arrival · 2026-09-16

FISL: A Phone Book for Content-Addressed Files

fisl.dev Observed source

Editorial interest 78/100 Selection signal · not a rating of the site

FISL is an HTTP lookup that maps a content identifier to publisher-announced URLs where the matching bytes can be fetched.

Landing page captured for the 2026-09-16 issue.

Field notes

FISL treats location discovery as a separate layer from content verification. Publishers write dev.fisl.at records to their own AT Protocol repositories, with the CID as the record key; indexers can follow the firehose or backfill repositories and retain one row per publisher and CID. The described API supports both JSON and JSONL responses, while clients remain responsible for fetching the bytes and hashing them against the requested CID.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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